DS-CDMA系统中基于GSC算法的盲空时多用户检测

Blind Space-time Multiuser Detection Based on GSC Algorithm for DS-CDMA System

在DS-CDMA系统多径衰落信道中把广义旁瓣相消(GSC)算法应用到盲空时多用户检测中,GSC算法把自适应约束优化问题简化为非约束优化问题,同时抑制了码间串扰和多址干扰。最后应用两种不同的方法进行多径合并,并对其进行比较,仿真结果表明了GSC算法在盲空时多用户检测中的有效性。

In this paper,the Generalized Sidelobe Canceler（GSC） algorithm is developed for blind space -time multiuser detection in DS- CDMA system with multipath fading. The CSC algorithm turns the constrained optimization problem into the non - constrained problem, Intersymbol Interference （ISI）, Multiple Access Interference （MAI） simultaneously suppressed. The two methods are adopted in the multipath combining and are compared. The algorithm is verified by following simulation.